Any recommendations on what to use to clean the black plastic around the side mirrors. Mine are pretty dull

 

The Turtle Wax quick detailer I use in between waxes keeps mine nice and new looking same thing for the plastic in the trunk under the deck lid.

 

since its plastic, i thnk you can use any kinda of interior dash protectant. I use mequires (the stuff that makes everything shiny). or i just quick detail then

 

Chemical Guys Fade to Black.

 

Wash with normal shampoo as you do the rest of the car. Then 303 aerospace. Protects the plastic from future damage. That will wash off though, so you will have to do it frequently. If it is really faded, try Back on Black to get back to looking good. Stuff is pretty solid. Another thing I've heard, although I can't vouch for it myself, is using tire dressing. I do see the logic though...